Wrap up well
Over the years, cable supports for long-span bridge structures have been protected from corrosion by a variety of systems. Some of the more common systems include lead-based paints, galvanising, polyethylene coatings, polyvinyl fluoride tapes, and filled or unfilled polyethylene pipes. But still there have been reports of cable corrosion on a number of bridges around the world including several cable-stayed structures which have been open for less than 20 years - some as little as two or three years. In addition, many early 20th century suspension bridges have recently undergone extensive cable restoration projects.